<#macro channelTree id node>
	<#local temp = node + 1 />
	<#list channels as comment>
	  	<#if id = comment.pid>
	  	<option value="${comment.id?c}"><#list 0..temp as x> &nbsp; &nbsp; </#list>├ ${comment.name!}</option>
	    <@channelTree id = comment.id node=temp/>
      	</#if>
	</#list> 
</#macro>